CN107617998B - It is a kind of for dismounting the nut spanner of circular cone head nut - Google Patents

It is a kind of for dismounting the nut spanner of circular cone head nut Download PDF

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Publication number
CN107617998B
CN107617998B CN201711104722.1A CN201711104722A CN107617998B CN 107617998 B CN107617998 B CN 107617998B CN 201711104722 A CN201711104722 A CN 201711104722A CN 107617998 B CN107617998 B CN 107617998B
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China
Prior art keywords
claw
nut
spanner
conical indentation
arc groove
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CN201711104722.1A
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CN107617998A (en
Inventor
温上樵
陈星�
马云鹏
陆忠花
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Nanjing College of Information Technology
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Nanjing College of Information Technology
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Abstract

The invention discloses a kind of for dismounting the nut spanner of circular cone head nut, including handle, wrench body and claw, handle is linked on wrench body, the central part of wrench body is equipped with first through hole, conical indentation is coaxially provided in one end of first through hole, axially through being equipped with radial arc groove on the periphery of the conical indentation, one end of claw is fastened in arc groove and can do Double-directional rotary around the center of conical indentation, the other end of claw stretches out arc groove and extends to the inner cavity of conical indentation, one end that the claw stretches out arc groove is equipped with the first protrusion and the second protrusion.Nut spanner of the invention can realize the continuous complete cycle revolution of nut in limited corner, without separating spanner with nut, greatly improve working efficiency.Nut spanner of the invention is using light, and service life is long, not the surface of easy damaged nut to be dismounted.

Description

It is a kind of for dismounting the nut spanner of circular cone head nut
Technical field
The present invention relates to a kind of spanners, and in particular to a kind of for dismounting the nut spanner of circular cone head nut.
Background technique
Spanner is a kind of common dismantling device, and the more common tool of existing assembling-disassembling bolt nut is pipe vice or interior Hexagon wrench, pipe vice can damage the circular conical surface of nose cone nuts and bolt when dismounting conical head bolt and nut, be unfavorable for Being dismounted for multiple times.Allen wrench is only used for the dismounting of hexagon socket head cap screw, and once interior hexagonal is damaged, dismounting will be unable to At.It is limited by dismounting space, existing spanner is every to rotate in rotating nuts, must just remove spanner, again fixed It is rotated again behind position, disassembly efficiency is lower, and if space very little, it more difficult in operation.
Summary of the invention
The present invention provides a kind of for dismounting the nut spanner of circular cone head nut, the achievable nut in limited corner The revolution of continuous complete cycle, without separating spanner with nut, greatly improve working efficiency, and not easy damaged nut Circular conical surface.
The technical solution adopted by the present invention is that:
It is a kind of for dismounting the nut spanner of circular cone head nut, including handle, further include wrench body and claw, the spanner Handle is linked on body, the central part of wrench body is equipped with first through hole, is coaxially provided with conical indentation in one end of first through hole, Axially through radial arc groove is equipped on the periphery of the conical indentation, one end of claw is fastened in arc groove And Double-directional rotary can be done around the center of conical indentation, the other end of claw stretches out arc groove and prolongs to the inner cavity of conical indentation It stretches, one end that the claw stretches out arc groove is equipped with the first protrusion and the second protrusion.
The nut spanner for dismounting circular cone head nut of the invention is a kind of self-locking spanner, and when use covers spanner On the outer peripheral surface of nut to be dismounted, freely against the arc surface of wrench body arc groove, the other end of claw is free for one end of claw Against the outer peripheral surface of nut to be dismounted, at this point, the distance at claw end to spanner center is maximum.When work, handle band wrench Body rotates forward or backwards, while wrench body drives claw to turn around spanner center (i.e. the center of the conical indentation of wrench body) Dynamic, the distance at claw end to spanner center is gradually reduced, until a protrusion of claw and nut outer peripheral surface to be dismounted are close Contact finally generates self-locking (another protrusion of claw is separated with nut) because of friction, and claw clamps nut.Continue to rotate hand Handle, the outer peripheral surface of claw binding nut drive nut rotation.Spanner is rotated backward a little, claw, which rotates backward, is restored to initial shape State, claw are separated with nut.After handle goes to suitable position, continuing to rotate forward spanner, claw continues binding nut, until Complete work.Therefore, it when dismounting circular cone head nut or conical head bolt, even in limited operating space, is also not required to Spanner is removed, the position of spanner is continuously adjusted.
As improvement of the present invention, the nut spanner further includes spanner end cap, and the central part of spanner end cap is equipped with the Two through-holes, spanner end cap are connect by bolt with the side that wrench body is equipped with conical indentation.It can by the sealing of spanner end cap The cleaning inside nut spanner is kept, prevents dust greasy dirt etc. from entering.
As improvement of the present invention, the claw is in prismatic column, including columnar claw ontology, claw ontology The outer peripheral surface of side projects radially outwardly the head to be formed in arc surface, and the head is movably fastened on conical indentation In arc groove, the outer peripheral surface of claw body tail section projects radially outwardly the first protrusion and the second protrusion to form claw.Column card The design of pawl ontology is the contact surface in order to increase claw and nut, in order to reliably clamp nut.It designs on the head of arc surface The frictional force that claw slides in wrench body can be reduced, uses spanner light and handy.
As a further refinement of the present invention, the first protrusion of the claw and the cross section of the second protrusion are circular arc Shape.First protrusion and the second protrusion are in semi-cylindrical, and when claw rotates and turns round, the protrusion of semi-cylindrical is in nut to be dismounted Outer peripheral surface sliding, can reduce frictional force, reduce the damage to nut surface.
As improvement of the present invention, the bus of the conical indentation and the center line of its arc groove are parallel.In this way Design be to make arc groove that there is constant cross section, claw is fastened on circle with the gradient equal with conical indentation cone angle When in arc slot, claw uniform force reduces abrasion.
As to further improvement of the invention, the claw is in prismatic column, with the cone with conical indentation The equal gradient in angle is fastened in arc groove.The design makes spanner of the invention uniform force when in use, reduces friction, extends The service life of spanner.Claw can be contacted with nut along nut thickness direction to be dismounted is as much as possible, increase friction, enhancing folder Holding force is to reach more reliable clamping nut.
As to further improvement of the invention, the taper of the conical indentation is 5~30 degree.It is existing wait tear open The taper of loading nut is usually 5~30 degree, and the taper for designing conical indentation is adapted to it, can obtain claw and with dismounting spiral shell Female bigger contact surface keeps clamping more reliable.
As a further refinement of the present invention, the claw is equipped with 2~16.When nut size to be dismounted is smaller or When larger, in order to obtain the spanner being more adapted to, suitable claw quantity is designed, clamping is reliable and spanner structure is light and handy in order to make. Claw is at least arranged 2, at most setting 16, and the claw of too many quantity will reduce the weight of the revolution distance and increase spanner of spanner Amount.
As improvement of the present invention, the arc groove of the conical indentation is equipped with 2~16.It is such design be for More reliably clamp nut.
As improvement of the present invention, the material of the claw is plastics or mild steel.The hardness of claw material is far below spiral shell Mother will not cause to damage, and can generate bigger frictional force when clamping to make when clamping nut rotation to the outer peripheral surface of nut It clamps more reliable.
Beneficial effects of the present invention: nut spanner of the invention can realize that the continuous complete cycle of nut returns in limited corner Turn, without separating spanner with nut, greatly improves working efficiency.The present invention passes through the flexible clamping spiral shell of claw The overhang of mother, claw are adjustable and claw is easily replaced, and spanner service life of the invention is long.Hardness is selected to be lower than the card of nut Pawl, claw will not cause to damage on the cylindrical surface that clamping nut is not easy damaged nut to nut.Present invention may also apply to other The dismounting of nut, as long as the tail portion of design claw can be against the outer peripheral surface of nut.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of embodiment of the invention.
Fig. 2 is the half sectional view (removal handle) of Fig. 1.
Fig. 3 is the top view of wrench body in Fig. 1.
Fig. 4 is the half sectional view of Fig. 3.
Fig. 5 is the main view of claw in Fig. 1.
Fig. 6 is the side view of Fig. 5.
Fig. 7 is the partial enlarged view (removing the screw hole on claw ontology) of the A of Fig. 1.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to technology of the invention Scheme is clearly and completely described.
The meaning of heretofore described " inside and outside " refers to relative to equipment itself, the side inside sensing equipment To in, on the contrary is outer.
The meaning of heretofore described " axial direction " refers to direction identical with the equipment axle center, and the meaning of " radial direction " refers to Be and axial perpendicular direction.
It is a kind of for dismounting the nut spanner of circular cone head nut, including handle 3, wrench body 1, card referring to attached drawing 1 and Fig. 2 Pawl 2 and spanner end cap 4, wrench body 1 are in the flat column of polygon-octagonal, are embedded at the center of handle 3, pull in other embodiments Hand can also be used other types of attachment in the prior art with handle and connect.Wrench body is designed in the present embodiment in polygon-octagonal Flat column is embedded the heart in the handle.The wrench body of the different size of identical appearance is designed (by changing the shape inside wrench body Or the size of claw), suitable wrench body is selected according to the nut to be dismounted of different size when use, it is only necessary to replace wrench body With regard to achievable work, it is convenient that wrench body carries replacement.End cap 4 is mounted on wrench body 1 by bolt 41.
Referring to Fig. 3 and Fig. 4, the central part of wrench body 1 is equipped with first through hole 13, is coaxially provided with circle in one end of first through hole Tapered indentations 11, axially through being equipped with radial arc groove 111 on the periphery of conical indentation 11, arc groove 111 The center line of circular arc is parallel with the bus of conical indentation 11, i.e., arc groove 11 is a prismatic slot.In the present embodiment The taper of conical indentation is 18 degree, can also be selected between 5~30 degree in other embodiments.It is all provided in total in the present embodiment There are 8 arc grooves, arc groove can also be set as 2~16 in other embodiments.In the present embodiment, wrench body 1 and circular cone V notch v 11 intersect face 112 be designed as it is perpendicular with the inclined surface of conical indentation, such design can make insertion cone The terminal surface of column claw 2 in the arc groove of notch and face 112 completely attach to, and can avoid claw by the pressing of spanner end cap Axial motion is generated in use, reduces the service life of the friction extension spanner of claw and wrench body.
Refering to Fig. 5 and Fig. 6, claw 2 is in prismatic column, and the outer peripheral surface radially outwardly projecting of the side of column claw ontology goes out Formed be in arc surface head 21, the outer peripheral surface of the tail portion of claw ontology project radially outwardly to be formed claw first protrusion 22 and Second protrusion 23, the first protrusion 22 are equipped with arc surface 221, and the second protrusion 23 is equipped with arc surface 231, the first protrusion and second Protrusion is in semi-cylindrical.Refering to fig. 1, the head 21 of claw 1 is fastened in the arc groove 111 of the conical indentation of claw ontology 1, Its tail portion is stretched out arc groove and is extended to the inner cavity of claw ontology.Refering to Fig. 7, between being equipped between arc groove 111 and claw head 21 Gap, the distance S1 at the minimal openings of arc groove 111 are less than the maximum interval S 2 on claw head 21, and claw 2 is by cone shaped opening After in 11 insertion arc grooves 111, Double-directional rotary can be done around the center line of claw ontology 1 without deviating from from arc groove.This reality It applies in example, is equipped with equal 8 claws altogether, 2~16 can also be equipped in other embodiments.The material of claw is in the present embodiment Nylon plastic(s) can also be in other embodiments other plastics or mild steel, be selected according to the hardness of nut to be dismounted.
The working principle of the invention is:
1) the nut wrench suitable according to the selection of the diameter of nut to be dismounted;
2) by assembled nutplate gloves on circular cone head nut, when use, covers spanner in the periphery of nut to be dismounted On face, one end (claw head) of claw is freely against the arc surface of wrench body arc groove, the other end (claw tail portion) of claw Freely against the outer peripheral surface of nut to be dismounted, at this point, the distance at claw end to spanner center is maximum.
When work, handle drives wrench body to rotate forward or backwards, while wrench body drives claw (to pull around spanner center The center of the conical indentation of hand body) rotation, the distance at claw end to spanner center is gradually reduced, until the one of claw tail portion A protrusion finally generates self-locking, another protrusion and the nut point of claw with nut outer peripheral surface to be dismounted close contact because of friction From claw clamps nut.Handle is continued to rotate, the outer peripheral surface of claw binding nut drives nut rotation.
Spanner is rotated backward a little, claw, which rotates backward, to be returned to original state, and claw is separated with nut.It is gone to handle After suitable position, continue to rotate forward spanner, claw continues binding nut, until completing work.
Not doing the part illustrated in above instructions is the prior art, or has both been able to achieve by the prior art.

Claims (8)

1. a kind of for dismounting the nut spanner of circular cone head nut, including handle, it is characterised in that: further include wrench body and card Pawl, the wrench body are embedded in and are fixed in handle, and handle drives wrench body to synchronously rotate, and the central part of wrench body is equipped with first Through-hole is coaxially provided with conical indentation in one end of first through hole, axially through being all provided on the periphery of the conical indentation There is radial arc groove;The claw is in prismatic column, including columnar claw ontology, the periphery of claw ontology side Face projects radially outwardly the head to be formed in arc surface, and the outer peripheral surface of claw body tail section projects radially outwardly to form the of claw One protrusion and the second protrusion;Claw head is movably fastened in the arc groove of conical indentation, and can be around conical indentation Center do Double-directional rotary, claw body tail section stretches out arc groove and extends to the inner cavity of conical indentation, the first protrusion of claw And second protrusion be contained in the inner cavity of conical indentation;The material of the claw is plastics or mild steel.
2. nut spanner according to claim 1, it is characterised in that: further include spanner end cap, in the spanner end cap Center portion is equipped with the second through-hole, and spanner end cap is connect by bolt with the side that wrench body is equipped with conical indentation.
3. nut spanner according to claim 1, it is characterised in that: the first protrusion of the claw and the cross of the second protrusion Section is arc-shaped.
4. nut spanner according to claim 1, it is characterised in that: the bus of the conical indentation and its arc groove Center line is parallel.
5. nut spanner according to claim 4, it is characterised in that: the claw is with equal with the cone angle of conical indentation Gradient be fastened in arc groove.
6. nut spanner according to claim 5, it is characterised in that: the taper of the conical indentation is 5~30 degree.
7. nut spanner according to claim 1, it is characterised in that: the claw is equipped with 2~16.
8. nut spanner according to claim 1, it is characterised in that: the arc groove of the conical indentation is equipped with 2~ 16.
CN201711104722.1A 2017-11-10 2017-11-10 It is a kind of for dismounting the nut spanner of circular cone head nut Active CN107617998B (en)

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Application Number Priority Date Filing Date Title
CN201711104722.1A CN107617998B (en) 2017-11-10 2017-11-10 It is a kind of for dismounting the nut spanner of circular cone head nut

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Application Number Priority Date Filing Date Title
CN201711104722.1A CN107617998B (en) 2017-11-10 2017-11-10 It is a kind of for dismounting the nut spanner of circular cone head nut

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CN107617998B true CN107617998B (en) 2019-06-18

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906822A (en) * 1973-05-03 1975-09-23 Nicholas Leslie Hertelendy Ratchet wrenches
CN87203459U (en) * 1987-07-14 1988-10-19 地方国营盖县锅炉辅机厂 Spanner for double-head screw bolt
JP2001239468A (en) * 2000-02-28 2001-09-04 Yamashita Kogyo Kenkyusho:Kk Torque adapter
CN202753067U (en) * 2012-06-20 2013-02-27 东莞市希普思五金机械有限公司 Tightening wrench
US9278434B2 (en) * 2013-02-14 2016-03-08 ToolTech, LLC Socket fastener removal tool
CN104314947A (en) * 2014-10-30 2015-01-28 南京信息职业技术学院 Anti-theft nut and wrench

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